Alphabet shares are different classes of ordinary share. A shares, B shares, C shares: each with the right to receive a different dividend per share. They allow a company to pay different dividend amounts to different shareholders in the same year, without changing the number of shares held.
In a family business where one shareholder is a higher-rate taxpayer and another is a basic-rate taxpayer, alphabet shares allow dividends to be directed toward the lower-rate taxpayer. The tax saving on £50,000 of dividends redirected from a 33.75% taxpayer to an 8.75% taxpayer is £12,500 per year.
How they work
The company's articles of association are amended to create multiple share classes. Each class carries the same voting rights and the same entitlement to capital on a winding up, but the directors have discretion over how much dividend to declare on each class in any given year.
The mechanics are straightforward. The tax analysis is where care is required.
The settlements legislation risk
HMRC can challenge income-splitting arrangements under the settlements legislation (Section 624 ITTOIA 2005) if the arrangement is designed to divert income from one person to another and the original owner retains an interest in the income. The leading case is Arctic Systems (Jones v Garnett, 2007), where the House of Lords found in favour of the taxpayer: but only because the spouse's shares were a genuine gift with no retained interest.
The key tests are: did the recipient receive the shares as a genuine gift? Do they have real economic rights? Is the arrangement commercially justifiable? If the answer to all three is yes, the settlements legislation does not apply.
When alphabet shares are appropriate
Alphabet shares work well where a spouse or adult child is genuinely involved in the business, holds shares as a genuine gift, and has their own lower marginal tax rate. They are less appropriate where the recipient has no involvement in the business and the sole purpose is tax reduction, that is the arrangement HMRC challenges.
The holding company layer
In a group structure, alphabet shares are typically issued at the holding company level rather than the trading company. This allows dividend income to flow up from the trading subsidiary to the holding company corporation-tax-free (under the inter-company dividend exemption), and then be distributed to individual shareholders at their respective rates.
The Capital Audit identifies whether your current share structure is creating unnecessary personal tax exposure and whether alphabet shares or a different share class design would reduce it.
Alphabet Shares Are the Beginning, Not the End
Alphabet shares are a Growth-layer tool. They enable income splitting across family members at their respective tax rates. Any competent accountant can draft them. The tax saving is real and immediate.
What alphabet shares do not do is govern the relationship between the shareholders. They define economic rights. They do not define voting rights, decision-making authority, exit rights, or what happens when a family member wants to sell their shares to someone outside the family.
The Expansion layer is the constitutional architecture that makes alphabet shares function as a family capital structure rather than just a tax mechanism, a shareholders agreement, a governance framework, and a succession plan that determines how the share structure functions across generations, not just at the point of issue.